9990

9990 is a four-digit integer. It falls between 9989 and 9991 in the sequence of natural numbers. In Roman numerals, 9990 would be represented as X̅X̅X̅X̅IX. Its prime factorization is 2 × 3 × 5 × 333, which simplifies to 2 × 3² × 5 × 111, further breaking down to 2 × 3³ × 5 × 37. The number 9990 is an even number. It is also a composite number, meaning it has divisors other than 1 and itself. Its divisors include 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 37, 45, 54, 74, 90, 111, 148, 165, 185, 222, 259, 333, 370, 495, 555, 666, 740, 925, 999, 1110, 1480, 1665, 1850, 1998, 2497, 2997, 3330, 4995, and 9990. The sum of the digits of 9990 is 9 + 9 + 9 + 0 = 27. In base-2 (binary), 9990 is represented as 10011100010110. In base-16 (hexadecimal), it is represented as 270E.